EP 1263143 A4 20070404 - DIGITAL COMMUNICATION SYSTEM
Title (en)
DIGITAL COMMUNICATION SYSTEM
Title (de)
DIGITALES KOMMUNIKATIONSSYSTEM
Title (fr)
SYSTEME DE COMMUNICATION NUMERIQUE
Publication
Application
Priority
- JP 0100604 W 20010130
- JP 2000021986 A 20000131
Abstract (en)
[origin: EP1263143A1] The present invention provides a digital communication system which is free from noise generated in a receiver. A transmitter converts an analog input signal to a digital signal, and then a power level detector 5 compares the digital signal with a predetermined level. In accordance with the result, the transmitter transmits a transmission signal which includes the digital signal or a digital signal amplified from that digital signal, and a control bit indicative of the result of comparison. The receiver, in accordance with the control bit included in the received digital signal, outputs an analog signal converted from the received digital signal or an analog signal converted from the received digital signal after it is digitally amplified. <IMAGE>
IPC 8 full level
H04B 1/64 (2006.01); H03G 3/00 (2006.01); H03G 3/30 (2006.01); H03M 1/18 (2006.01); H04B 1/3822 (2015.01); H04B 1/40 (2015.01)
CPC (source: EP US)
H03G 3/001 (2013.01 - EP US); H03G 3/3042 (2013.01 - EP US); H04B 1/64 (2013.01 - EP US)
Citation (search report)
- [XY] US 4123711 A 19781031 - CHOW SHERMAN M
- [Y] EP 0966105 A2 19991222 - TOA CORP [JP]
- See references of WO 0158021A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1263143 A1 20021204; EP 1263143 A4 20070404; EP 1263143 B1 20111207; AU 3052701 A 20010814; JP 2001217742 A 20010810; JP 4002709 B2 20071107; US 2003123480 A1 20030703; US 7035395 B2 20060425; WO 0158021 A1 20010809
DOCDB simple family (application)
EP 01902667 A 20010130; AU 3052701 A 20010130; JP 0100604 W 20010130; JP 2000021986 A 20000131; US 18252302 A 20021114